FM / posix

/usr/include/boost/process/detail/posix/

/usr/include/boost/process/detail/posix

Name	Size	Mode	Actions
asio_fwd.hpp	1342	0644	edit dl rm
async_handler.hpp	1187	0644	edit dl rm
async_in.hpp	3541	0644	edit dl rm
async_out.hpp	5794	0644	edit dl rm
async_pipe.hpp	11386	0644	edit dl rm
basic_cmd.hpp	4551	0644	edit dl rm
basic_pipe.hpp	5660	0644	edit dl rm
child_handle.hpp	1432	0644	edit dl rm
close_in.hpp	1053	0644	edit dl rm
close_out.hpp	1735	0644	edit dl rm
cmd.hpp	2531	0644	edit dl rm
compare_handles.hpp	1029	0644	edit dl rm
environment.hpp	9960	0644	edit dl rm
env_init.hpp	979	0644	edit dl rm
exe.hpp	569	0644	edit dl rm
executor.hpp	15541	0644	edit dl rm
fd.hpp	2621	0644	edit dl rm
file_descriptor.hpp	1884	0644	edit dl rm
file_in.hpp	1407	0644	edit dl rm
file_out.hpp	2198	0644	edit dl rm
group_handle.hpp	2068	0644	edit dl rm
group_ref.hpp	1088	0644	edit dl rm
handler.hpp	1739	0644	edit dl rm
handles.hpp	3945	0644	edit dl rm
io_context_ref.hpp	4036	0644	edit dl rm
is_running.hpp	2304	0644	edit dl rm
null_in.hpp	1305	0644	edit dl rm
null_out.hpp	2089	0644	edit dl rm
on_exit.hpp	1001	0644	edit dl rm
pipe_in.hpp	2375	0644	edit dl rm
pipe_out.hpp	3091	0644	edit dl rm
search_path.hpp	1218	0644	edit dl rm
shell_path.hpp	878	0644	edit dl rm
sigchld_service.hpp	4102	0644	edit dl rm
signal.hpp	1898	0644	edit dl rm
start_dir.hpp	1093	0644	edit dl rm
terminate.hpp	1199	0644	edit dl rm
use_vfork.hpp	781	0644	edit dl rm
wait_for_exit.hpp	6689	0644	edit dl rm
wait_group.hpp	3423	0644	edit dl rm

Edit: /usr/include/boost/process/detail/posix/wait_group.hpp (3423B)

// Copyright (c) 2006, 2007 Julio M. Merino Vidal
// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
// Copyright (c) 2009 Boris Schaeling
// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

#ifndef BOOST_PROCESS_DETAIL_POSIX_WAIT_GROUP_HPP
#define BOOST_PROCESS_DETAIL_POSIX_WAIT_GROUP_HPP

#include <boost/process/detail/config.hpp>
#include <boost/process/detail/posix/group_handle.hpp>
#include <chrono>
#include <system_error>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>

namespace boost { namespace process { namespace detail { namespace posix {

inline void wait(const group_handle &p, std::error_code &ec) noexcept
{
    pid_t ret;
    siginfo_t  status;

do
    {
        ret = ::waitpid(-p.grp, &status.si_status, 0);
        if (ret == -1)
        {
            ec = get_last_error();
            return; 
        }

//ECHILD --> no child processes left.
        ret = ::waitid(P_PGID, p.grp, &status, WEXITED | WNOHANG);
    } 
    while ((ret != -1) || (errno != ECHILD));
   
    if (errno != ECHILD)
        ec = boost::process::detail::get_last_error();
    else
        ec.clear();
}

inline void wait(const group_handle &p) noexcept
{
    std::error_code ec;
    wait(p, ec);
    boost::process::detail::throw_error(ec, "waitpid(2) failed in wait");
}

template< class Clock, class Duration >
inline bool wait_until(
        const group_handle &p,
        const std::chrono::time_point<Clock, Duration>& time_out,
        std::error_code & ec) noexcept
{

::siginfo_t siginfo;

bool timed_out = false;
    int ret;

::timespec sleep_interval;
    sleep_interval.tv_sec = 0;
    sleep_interval.tv_nsec = 100000000;

while (!(timed_out = (Clock::now() > time_out)))
    {
        ret = ::waitid(P_PGID, p.grp, &siginfo, WEXITED | WSTOPPED | WNOHANG);
        if (ret == -1)
        {
            if ((errno == ECHILD) || (errno == ESRCH))
            {
                ec.clear();
                return true;
            }
            ec = boost::process::detail::get_last_error();
            return false;
        }
        //we can wait, because unlike in the wait_for_exit, we have no race condition regarding eh exit code.
        ::nanosleep(&sleep_interval, nullptr);
    }
    return !timed_out;
}

template< class Clock, class Duration >
inline bool wait_until(
        const group_handle &p,
        const std::chrono::time_point<Clock, Duration>& time_out) noexcept
{
    std::error_code ec;
    bool b = wait_until(p, time_out, ec);
    boost::process::detail::throw_error(ec, "waitpid(2) failed in wait_until");
    return b;
}

template< class Rep, class Period >
inline bool wait_for(
        const group_handle &p,
        const std::chrono::duration<Rep, Period>& rel_time,
        std::error_code & ec) noexcept
{
    return wait_until(p, std::chrono::steady_clock::now() + rel_time, ec);
}

template< class Rep, class Period >
inline bool wait_for(
        const group_handle &p,
        const std::chrono::duration<Rep, Period>& rel_time) noexcept
{
    std::error_code ec;
    bool b = wait_for(p, rel_time, ec);
    boost::process::detail::throw_error(ec, "waitpid(2) failed in wait_for");
    return b;
}

}}}}

#endif

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